Steam heating apparatus



(No Model.)

M. P. HATHAWAY.

- STEAMHEATING APPARATUS. No. 255,167.

Patented Mar. 21,1882.

ttorneys .5 l: iZ-EZ WITNESSES N. PETERS. Phnto-lithogrzlphun Wnlhinglrm.

UNITED STATES PATENT OFFICE.

MARVIN P. HATHAWAY, 0F DEOORAH, Iowa.

STEAM H EATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 255,167, dated March 21, 1882.

Application filed August 9, 1881.

To all whom it may concern:

Be it known that I, MARVIN P. HATHAWAY, of Decorah, in the county of WVinneshiek and State of Iowa, have invented certain new and useful Improvements in Steam Heating Apparatus; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in which- Figure 1 is a longitudinal vertical section of my apparatus, and Fig. 2 is a similar view, illustrating a modification of the same.

Similar letters of reference indicate corresponding parts in both the figures.

This invention has relation to improvements in steam-heaters, and has for its object the construction of a boiler for generating the steam, which may be used with any ordinary kitchen range or stove, and is so simple in its construction that it may be managed with perfect safety by a domestic or other unskilled attendant.

The nature of my improvement will be hereinafter more fully described, and particularly pointed out in the claims.

My improved boiler consists essentially of an upper part or dome, A, of suitable size a d shape, according to the size and kind of stove or range with which it is to be used, and a lowerpart provided with fines Iand surrounded by a jacket or casing, J. The lower part or section, A, communicates with the upper part or dome, A, by short tubes B, so that the parts A, B, and A will be filled with water up to the line marked 0.

D is a pane of thick glass which is let into the head of the dome, and serves the purpose ofa water-gage, and H is the steam-pipe,\vhich conducts the steam to the place or places where it is to be used for heating purposes.

A pipe, E, is inserted vertically into the top part, A, of the steam-generator and extends down to near its bottom. This pipe isopen at the top, and is inserted through a vessel or receptacle, 1?. It is also provided with a small tube or opening, D, near the bottom of the receptacle F.

K is a flue which extends from thejacket J (No model.)

to the main flue or chimney, for carrying oii the products of combustion.

The apparatus being fitted over the fireholes of a range or stove, the heat will pass up through the vertical fiues I into jacket J, which surroundsthe lower part, A,ofthe steamgenerator, causing the water contained therein to come to a boil. By means of the vertical connecting-pipes B B the steam as it is generated in the lower part will pass up into the upper part, A, the water contained in which will also soon be brought to a boil, and the steam will rise through the steam-pipe H to the steam-coils or other apparatus to be supplied. In the event of any sudden turning off of steam the excess of pressure in chamber A will cause a column of hot water to rise in the vertical pipe E, which should be of sufficient heightand diameter to maintain a column of water equal to a steam-pressure of about one pound to the square inch before it will overflow at the top. If there is a further increase of pressure, the column of water in tubeE will overflow into the receptacle F, and gradually,

as the pressure is again reduced, find its way back into the steam-generator through the tube or aperture D.

The modification of the apparatus shown in Fig. 2 is intended for laundry purposes, where it is desired to have a constant supply of hot water easily accessible. This I attain by providing pipe E with its outlet D near the top of the overflow-receptacle F, above its waterline (1. I also provide this receptacle with a faucet, W, through which the hot water may be drawn ofi, and withtwo pipes, E and S, the first of which opens at top into receptacle Fa little below the water-line, and at the bottom into the top part or dome, A, of the steamgcnerator, some distance below its water-line 0, while the other pipe, S, extends from near the bottom of the overflow-receptacle F to the bottom of boiler A, and is provided with a stop-cock, V. I also surround the top part of steam-pipe H with a steam-drum, P, in the bottom of which the water of condensation will collect and flow back to the boiler through the aperture R,,while the dry steam escapes through the outlet or steam pipe Q tothe place or places where it is to be utilized. The pipes E and S operate to maintain the equilibrium in tanks F and A, and whenever hot water is drawn from the upper tank, F, in excess of what is fed to the tank through the overflowpipe E the supply may be replenished by opening the cock V in pipe S, by which hot water is forced from the bottom of the steam-generator up into tank F, the pressure being less in the open overflow-tank than in the steamdome A.

Having thus described myinvention, I claim and desire to secure by Letters Patent of the United States- 1. The combination, with the boiler or steamgenerator A A, having steam-pipe H, of the vertical open tube or pipe E, having aperture D, and open orertlo\v-receptacle F, arranged and combined to operate in the manner and for the purpose shown and set forth.

2. The herein-described steam-generator for heating purposes, composed of the boiler A A, connecting-pipes B B, jacket J, flues I I and K, steam-outlet H, and vertical overflow-pipe E, having aperture D and open overflow-receptacle F, the whole constructed and arranged as shown, for the purpose set forth.

3. The combination, with the steam generator A A and its steam-pipe H, baring aperture It, and steam-druin P, provided with the steam-outlet Q, of the vertical overflow-pipe E, having aperture D, open receptacle F, having faucet W, and pipes E and S, the latter provided with stop-cock V, the whole constructed and combined to operate substantially as and for the purpose herein shown and specified.

In testimony that I claim the foregoing as my own I have hereunto afiixed my signature in presence of two witnesses,

MARVIN P. HATI'LMVAY.

Witnesses:

F. It. FULTON, S. J. AXDAHL, O. J. CLARK. 

